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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 1991  >  13(4): 408-418
Chen Hongqi, Zhao Xingyuan, Zhang youyu. A PRECISE PROCEDURE OF THE PROPORTION OF SMECTITE LAYER CALCULATION SUITABLE FOR INTERSTRATIFIED ILLITE/SMECTITES ANALYSIS OF NATURAL CLAY SAMPLES[J]. PETROLEUM GEOLOGY & EXPERIMENT, 1991, 13(4): 408-418. doi: 10.11781/sysydz199104408
Citation: Chen Hongqi, Zhao Xingyuan, Zhang youyu. A PRECISE PROCEDURE OF THE PROPORTION OF SMECTITE LAYER CALCULATION SUITABLE FOR INTERSTRATIFIED ILLITE/SMECTITES ANALYSIS OF NATURAL CLAY SAMPLES[J]. PETROLEUM GEOLOGY & EXPERIMENT, 1991, 13(4): 408-418. doi: 10.11781/sysydz199104408
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A PRECISE PROCEDURE OF THE PROPORTION OF SMECTITE LAYER CALCULATION SUITABLE FOR INTERSTRATIFIED ILLITE/SMECTITES ANALYSIS OF NATURAL CLAY SAMPLES

doi: 10.11781/sysydz199104408

  • Scientific Research Institute of Petroleum Exploration and Development, Beijing

  • Received Date: 1989-03-20
  • Publish Date: 1991-10-25
    Abstract
  • The 17Åreflection of the XRD pattern of oriented preparation ethy-lene glycol-solvated sample is an effective indicator to distinguish the disorderly from orderly (IS-ordered and ISII-ordered) illite/smectite interstrata.The experiments in this paper shows that the 17Åreflection intensity of disorderly interstratified illite/smectite varied mainly with the proportion of smectite layers (S%) for the pure sample rather than with the proportion of smectite layers (S%),but also with the disorderly interstratified illite/smectite content (I/S(%)) and other types of mineral contents,especially the content of discrete illite (I(%)) for the mixtures.From the XRD data of mixture samples composed of disorderly interstratified illite/smectite with two different proportions of smectite layers (S%) and different contents of discrete illites (I/S(%)),a precise procedure on the proportion of smectite layers (S%) calculation suitable for disorderly interstratified illite/smectite analysis of natural clay samples has been deduced.In the paper,a precise procedure on the proportion of smectite layer calculation suitable for orderly interstratified illite/smectite analysis of natural clay samples also has been deduced based on the data of Srodons publication (1984) and author's practical XRD analyses.

     

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    • References(13)
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